package org.logan.sample.web.base.mybatis;

import java.util.Properties;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Plugin;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Intercepts(@Signature(type = Executor.class, method = "query", args = { MappedStatement.class, Object.class,
		RowBounds.class, ResultHandler.class }))
public class ExecutorInterceptor implements Interceptor {
	private final Logger logger = LoggerFactory.getLogger(getClass());

	@SuppressWarnings("unused")
	private PluginDialect.Type getDialectType(MappedStatement mappedStatement) {
		try {
			Configuration configuration = mappedStatement.getConfiguration();
			return PluginDialect.Type.loadValue(configuration.getDatabaseId());
		} catch (Exception e) {
			logger.error("mybatis 配置错误-->未配置dialect", e);
		}
		return null;
	}

	public Object intercept(Invocation invocation) throws Throwable {
		// Object paramObject = invocation.getArgs()[1];
		// if (paramObject instanceof Pager) {
		// Pager page = (Pager) paramObject;
		// if (!page.isSimpleQuery()) {
		// PluginDialect dialect = null;
		// MappedStatement mappedStatement = (MappedStatement)
		// invocation.getArgs()[0];
		// switch (getDialectType(mappedStatement)) {
		// case MySQL:
		// dialect = PluginDialectMySQL5.getInstance();
		// break;
		// default:
		// throw new RuntimeException("自动分页不支持制定的Dialect配置");
		// }
		// }
		// }
		return invocation.proceed();
	}

	public Object plugin(Object target) {
		return Plugin.wrap(target, this);
	}

	public void setProperties(Properties properties) {
	}
}
